homebridge-telldus is a plugin for homebridge which allows you to control cheap 433MHz devices like wireless light switches and dimmers from Apple's Home integration. This is done through Telldus Live, which provides a free service and API integration for people who bought their devices like TellStick Net and TellStick ZNet Lite. It provides a very cheap way to control your house with Siri and Apple Home.
See compatible hardware here: https://old.telldus.com/products/compability
v1 of the homebridge-telldus plugin now also supports local communiation directly with devices that support this, like the TellStick ZNet Lite.
For instructions on how to set up the system, see: https://github.com/jchnlemon/homebridge-telldus